Some TPS Trouble
#1
Some TPS Trouble
My car has been spittering an spuddering and the code its throwing is a P0122 code. This says its a "Throttle/pedal position sensor/switch A circuit low input". I replaced the TPS about 3 months ago, and all was well. It seems that it is connected fine and all of the pins are straight. Any other ideas what it could be. I am thinking I might have to open up the wiring to make sure all of the wires are good, and not broken in any spots, but we all know that finding a wiring problem is a lot of trouble. Also, when the car was hooked up to the scanner tool, you could see that the throttle position was making no change when it was displyed on the screen, and the car is idling really high, around 1500 rpm. Any other ideas would be helpful. Thanks
#5
What throttle body do you have? The TPS needs to see a certain voltage at startup. .1-.9 volts I believe. If this isnt met it will throw the PO122 code. Try hooking up a scanner to see its voltage at start up. Try to aim for .65 volts or so. Thats where the factory has it set and from most guys say they get the best results with it like this.
#7
I have the stock throttle bosy, but how would I adjust the voltage in the TPS? If it reads too high or too low of voltage, whats the next step? To search the wires for a possible break somewhere?
#8
Test across the black and blue wires if you only have a voltmeter. A scanner will show you the same voltage. If you tilt or "swivel" the top of the TPS towards the front of the car the voltage will increase. Move it around in this fashion and you should se some movement there.
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tdigger9899
General 1967-2002 F-Body Tech
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09-07-2015 11:56 AM